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Biomed Environ Sci ; 24(6): 617-23, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22365397

RESUMO

OBJECTIVE: To evaluate dietary iodine intake and its potential risks among the Chinese population. METHODS: Individual dietary iodine intake was calculated using food consumption data multiplying by iodine concentration in foods, table salt and drinking water, followed by summing, and then compared with the corresponding age-specific reference values, including Upper Intake Level (UL) and Recommended Nutrient Intake (RNI). RESULTS: In areas with water iodine concentration (WI) lower than 150 µg/L, 80.8% of residents had iodine intake between the RNI and UL, 5.8% higher than UL, and the remaining (13.4%) lower than RNI if iodized salt was consumed. However, in the uniodized salt consumption scenario, only 1.0% of residents between RNI and UL, 1.4% higher than UL, and a large part of residents (97.6%) lower than RNI. In areas with WI higher than 150 µg/L, all residents had iodine intake between RNI and UL if iodized salt was consumed, except 10.5% and 24.9% of residents higher than UL in areas with WI at 150-300 µg/L and higher than 300 µg/L respectively. However, in the uniodized salt consumption scenario, only 1.5% and 1.7% of residents had higher iodine intake than UL respectively. CONCLUSION: The findings suggested that in general, the dietary iodine intake by the Chinese population was appropriate and safe at the present stage. People in areas with WI lower than 150 µg/L were more likely to have iodine deficiency. While people in areas with WI higher than 150 µg/L were more likely to have excessive iodine intake if iodized salt was consumed.


Assuntos
Água Potável , Iodo , Estado Nutricional , Cloreto de Sódio na Dieta , Adolescente , Criança , Pré-Escolar , China/epidemiologia , Dieta , Água Potável/química , Água Potável/normas , Feminino , Bócio/epidemiologia , Bócio/prevenção & controle , Humanos , Iodo/administração & dosagem , Iodo/análise , Iodo/deficiência , Masculino , Cloreto de Sódio na Dieta/administração & dosagem , Cloreto de Sódio na Dieta/análise
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